Computer controller system with a reprogrammable read only memory
US3944984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1974 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Apr 23, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/15048
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A miniaturized computer controller system utilizes reprogrammable "read only" ultraviolet memory chips instead of conventional core memories to store a control program comprising variable information regarding all electrical elements in all electrical circuit lines of the controller. The memory chips are reprogrammable within the controller and thus delicate removal of the chips for reprogramming is eliminated. The controller utilizes a central processor removably interfitting with a reprogramming module that also communicates with a programming panel. When in a "monitor" mode, the programming panel, in conjunction with the reprogramming module, allows the operator to view any particular electrical circuit line while the controller is operating. A scroll switch on the programming panel further allows the operator to view sequentially higher or lower numbered electrical circuit lines while a trace switch provides for examining any electrical circuit line to which a currently viewed element is referenced. When in a " program" mode, the programming panel, in combination with the reprogramming module, replaces the variable memory "read only" chips and allows the controller to continue …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.